Printing-stamp



UNITED STATES PATENT ()FFIGE.

\VILLIAM H. ELLIOT, OF PLATTSBURG, NEW YORK.

PRINTING-STAMP.

Specification of Letters Patent No. 16,581, dated February 10, 1857.

To all whom it may concern:

Be it known that I, M. H. ELLIOT, of Plattsburg, county of Clinton, State of New York, have invented a new and Improved Printing-Stamp; and I do hereby declare that the following is a full and exact clescription thereof, reference being had to the accompanying drawings and the letters of reference marked thereon.

The nature of my invention consists in the arrangement of certain devices for a printing stamp by which the type or die is caused to pass from the ink pads or rolls to the impression pad, to make the impression, and back to the ink pad again for the ink, the power being applied by the hand or foot.

To enable others to make and use my invention, I will proceed to describe its construction and operation.

Figure 1 is an elevation of the printing stamp. Fig. 2 is an elevation of the treadle. Fig. 3 is a plan of the crank and pulleys. Fig. 4 is an elevation of the ink pad and arm M. Fig. 6 is an elevation of a portion of the printing stamp showing a different joint at the upper end of the die carrier. Fig. 7 weight. Fig. 8 elevation of pulleys over which the cords pass.

Similar letters of reference indicate the same parts in each figure.

A, frame; B, die or type carrier; 0, die; D, impression pad; E, ink pad; F, crank; Gr, pulley to which the treadle is attached; G, pulley to which the weight is attached; H, sliding joint of the die carrier; I, treadle cam; 1, weight cord; K, pulleys over which the cords pass; L, weight; M, arm which supports the ink pad; N, curved pad.

Fig. 1 represents the die and its carrier in the posit-ion in which it is when the foot is pressed upon the treadle. hen the foot is removed from the treadle the weight drawing upon cord 1 which is attached to pulley Gr causes the crank to revolve upon pin 76 from its position as represented in the figure over to the left, carrying with it the car rier B and die C and placing the die on the ink pad E, from which the die receives the ink. B shows the die and a portion of the carrier in that position, but when the foot is placed upon the treadle the cord I being attached to and drawing upon the lower side of pulley G, causes the crank to pass over from left to right placing the die and carrier in the position represented in Fig. l and pressing it down with suflicient force to make the impression. The crank F being attached to the carrier B at a when it revolves causes the die to leave the impression pad in a direction perpendicular or nearly so to its plane. The ink pad may also be so placed that the die will strike it in a similar manner, but for the purpose of accomplishing certain ends this pad is raised a little above that point, so that the die may strike it with a sort of sweeping motion for the following reasons. It has been found necessary that the ink pad should revolve and at the same time be so balanced that it will adjust itself to the face of the die, so that all parts of it may be equally inked. By reference to Fig. 4 one method of accomplishing these ends may be seen.

0 is a peculiar shaped washer between the arm M and ad E. This washer on its lower side res s upon the arm at two points one on each side of the stem (Z of the pad in a line running across frame A. On its upper side it supports the pad also at two points in a line longitudinal with frame A. By being thus balanced the pad may be rocked in any direction by the slightest pressure. The points upon the side of the washer which support the pad are not in a line exactly through the center of the stem, but just sufficiently at one side of the center to cause the pad to tip a little as represented in Fig. 4, by which means the die always strikes the pad upon one particular side before it does the other and as the die approaches the pad with abaekward sweeping motion causes the highest side of the pad to move backward a little as it adjusts itself, the result of which is the pad is slowly revolved upon its center, bringing the type down upon it in a new place at each motion of the machine. Another method of balancing and revolving the ink pad is shown in Fig. 1. The spring 6 rests lightly against the stem d of the ink pad causing itto tilt a little which has the same result as the washer.

A scroll spring attached to the crank occupying the place of pulley G, so arranged as to cause the crank to pass over from right to left will answer instead of a weight, or by supplying the upper end of the stump or carrier with a handle I) the die may be thrown over upon the ink pad without the assistance of a spring or weight, by means of the hand. The handle 6 may also be used for bringing the die back to the impression pad and by a light blow upon it the impression completed without the assistance of the treadle cord I or pulley G, in a similar manner to the common hand stamp. This would make a very cheap and simple machine for small impressions but it could not be worked so rapidly as the foot stamp which requires but one downward motion of the foot for each impression, leaving both hands at liberty to feed the paper. Nor could such a stamp be worked with suflicient force to take large impressions such as bill-heads, &c., for any length of time without injury to the hand.

Fig. 6 represents a swinging joint for the upper end of the die carrier, which maybe used instead of the sliding joint H. This consists of an arm to jointed at each end. The joint it attaches it to the frame at the point 72,, Fig. 1. The other end is pointed to the carrier, and swings up and down as the crank passes over from one side to the other.

The peculiar position of crank F in relation to the impression pad and also to the ink pad renders it one of the most important devices of this invention. It may be seen by the drawings that the circle described by the crank has its plane perpendicular or nearly so to the plane of both pads; and that the extremity of the crank when put in motion rises in a direction perpendicularly or nearly so to the plane of one pad and falls toward the other pad in a corresponding direction, by which arrangement the crank alone imparts to the die carrier the necessary oscillating and sliding or longitudinal motion.

I do not claim the joint H as a stop for terminating or stopping any motion of the die carrier B, around pin or center is, and giving to said die-carrier a new and distinct motion, a device for this particular purpose being found in a hand stamp invented by Mr. P. A. Ramsey of Boston, the principal object of oint H in my invention being to confine one portion of die carrier B as nearly as is requisite to a direct or longitudinal motion.

hat I claim as my invention and wish to secure by Letters Patent is 1. The crank F joint H or their equivalents when used in combination with type or die C.

2. The same in combination with treadle.

3. The self adjusting ink pad E.

4. Tilting the inkpad E, so that by the action of the type or die upon it, it may be revolved.

5. The combination of the die or type C, with the crank F when arranged as specified in relation to the two pads.

-WM. H. ELLIOT.

the

WVitnesses A. A. PREsooT'r, CORNELIUS HARVEY. 

